A son of a colourblind father and a normal ho | vedclass

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(D) $1$. The father is colourblind $(X^cY)$ and the mother is homozygous normal $(XX)$. Their son receives the $Y$ chromosome from his father and an $

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Some normal and some colourblind sons

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(D) $1$. The father is colourblind $(X^cY)$ and the mother is homozygous normal $(XX)$. Their son receives the $Y$ chromosome from his father and an $X$ chromosome from his mother,making him normal $(XY)$.$2$. The daughter's father is normal $(XY)$ and her mother is heterozygous carrier $(XX^c)$. The daughter has a $50\%$ chance of being a carrier $(XX^c)$ and a $50\%$ chance of being normal $(XX)$. Assuming the daughter is a carrier $(XX^c)$,the cross is $XY 	imes XX^c$.$3$. The offspring genotypes are: $XX$ (normal daughter),$XX^c$ (carrier daughter),$XY$ (normal son),and $X^cY$ (colourblind son).$4$. Thus,the sons have a $50\%$ chance of being colourblind and $50\%$ chance of being normal.

$A$ son of a colourblind father and a normal homozygous mother marries a daughter of a normal father and a heterozygous (carrier) mother. What will be the phenotype of their children?

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